Class Notes (837,836)
Canada (510,504)
Biology (2,156)
BIO203H5 (36)

oct 30 lec.docx

5 Pages
Unlock Document

Maria Arts

sources of metaboilic energet raw material fro growth and tissue repair maintenance essential nutrients: our own body cant make it therefore we have to obtainn it nutrients that cannot be synthesized by the body and must be obtained in the diet carbohydrates e.g. glucose = monosaccharides (single unit of carbohydrate - C,H,O) disaccharide = glucose + fructose = sucrose polysaccharides: lots of subunits of monomers linked together to give us a long chain examples of polysaccharides: starch: storage form of sugar in plants storage form in animals storage in cell wall of plants Proteins: essential amino acids: cant make it on our own 3 types of Lipids 1. steroids 2. phospholipids 3. fats Vitamins essential for proper body function Vitamin D our body can make it on its own but needs sunlight we have cholestrol in our body which is very important and very essential for normal life; this cholestrol hits with sunlight, absorbs UV radiation and converts into form Vitamin D3.  Vitmain D needed for: affects calcium absorption  enhances bone growth sunlight! linked to calcium absorption! read canadian issues 43.1  vitamin D attached to Vitamin D receptor and crosses thru nuclear membrane to nucleus and binds to a gene which is reposnle for making a calcium bindinng protein  mechanism of calcium absorption! Folate  one of the vitamins function: important for development of the fetus! talking about the reproductive aspect as well not enough folate = abnormalities in the fetus in men, folate is important for sperm production! high UV: if light skinned: u absorb UV radiation  adequate amount of vitamin D dark skinned:skin protected with melanin, inhibits folate o interference from UV  adequate folin in low UV light lower vitamin D production for dark skinned UV: responsible for the evolution of skin color in people Minerals: need smaller amount: micronutrients vitamin D: responsible for uptake of calcium
More Less

Related notes for BIO203H5

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.